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Stages of infection during the tripartite interaction between Xenorhabdus nematophila, its nematode vector, and insect hosts Inra
Sicard, M.; Brugirard-Ricaud, K.; Pages, S.; Lanois, A.; Boemare, N.; Brehélin, M.; Givaudan, A..
Bacteria of the genus Xenorhabdus are mutually associated with entomopathogenic nematodes of the genus Steinernema and are pathogenic to a broad spectrum of insects. The nematodes act as vectors, transmitting the bacteria to insect larvae, which die within a few days of infection. We characterized the early stages of bacterial infection in the insects by constructing a constitutive green fluorescent protein (GFP)-labeled Xenorhabdus nematophila strain. We injected the GFP-labeled bacteria into insects and monitored infection. We found that the bacteria had an extracellular life cycle in the hemolymph and rapidly colonized the anterior midgut region in Spodoptera littoralis larvae. Electron microscopy showed that the bacteria occupied the extracellular...
Tipo: Journal Article Palavras-chave: XENORHABDUS; ENTOMOPATHOGENIC NEMATODE; STEINERNEMA; GFP-LABELED; INTESTINAL VESICLE; SPODOPTERA.
Ano: 2004 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008345034c5&uri=/notices/prodinra1/2009/03/
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